/* ======================================================================= */
/*  Project : VIM                                                          */
/*  Module  : ccfilter                              Version: 02.01.01      */
/*  File    : ccfilter.c                                                   */
/*  Purpose : Filter gmake/cc output into a standardized form              */
/* ======================================================================= */
/*         Created On: 12-Sep-95 20:32                                     */
/*  Last modification: 03-Feb-98                                           */
/*  -e option added by Bernd Feige                                         */
/* ======================================================================= */
/*  Copyright :                                                            */
/*     This source file is copyright (c) to Pablo Ariel Kohan              */
/* ======================================================================= */
#define __CCFILTER_C__

#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#define LINELENGTH 2048

/* Collector(s) */
char           Line[LINELENGTH];
char           Line2[LINELENGTH];
/* Components */
char           FileName[1024];
char           BasePath[1024];
char           CWD[1024];
unsigned long  Row;
unsigned long  Col;
char           Severity;
char           Reason[LINELENGTH];

#define COMPILER_UNKNOWN    0
#define COMPILER_GCC        1
#define COMPILER_AIX        2
#define COMPILER_ATT        3
#define COMPILER_IRIX       4
#define COMPILER_SOLARIS    5
#define COMPILER_HPUX       6

char    *COMPILER_Names[][2] =
    {
      /* Name            Description */
      { "N/A",          ""                                              },
      { "GCC",          "GCC compiler"                                  },
      { "AIX",          "AIX's C compiler"                              },
      { "ATT",          "AT&T/NCR's High Performance C Compiler"        },
      { "IRIX",         "IRIX's MIPS/MIPSpro C compiler"                },
      { "SOLARIS",      "SOLARIS's SparcWorks C compiler"               },
      { "HPUX",         "HPUX's C compiler"                             }
    };
#define COMPILER_QTY (sizeof(COMPILER_Names)/sizeof(COMPILER_Names[0]))

#if   defined(_GCC)
#                       define COMPILER_DEFAULT COMPILER_GCC
#elif defined(_AIX)
#                       define COMPILER_DEFAULT COMPILER_AIX
#elif defined(_ATT)
#                       define COMPILER_DEFAULT COMPILER_ATT
#elif defined(_IRIX)
#                       define COMPILER_DEFAULT COMPILER_IRIX
#elif defined(_SOLARIS)
#                       define COMPILER_DEFAULT COMPILER_SOLARIS
#elif defined(_HPUX)
#                       define COMPILER_DEFAULT COMPILER_HPUX
#else
#                       define COMPILER_DEFAULT COMPILER_UNKNOWN
#endif

const char USAGE[] =
"ccfilter  v2.1              (c)1994-1997 by Pablo Ariel Kohan\n"
"Filter Out compiler's output, and converts it to fit VIM\n\n"
"Usage:\n"
"  ccfilter [<options>]\n"
"Where: <options> is one or more of:\n"
"  -c              Decrement column by one\n"
"  -r              Decrement row by one\n"
"  -e              Echo stdin to stderr\n"
"  -v              Verbose (Outputs also invalid lines)\n"
"  -o <COMPILER>   Treat input as <COMPILER>'s output\n"
"                  Note: COMPILER may be preceded by an _\n"
"  -h              This usage.\n";


int ShowUsage( char *szError )
{ int i;

  fprintf( stderr, USAGE );

  fprintf( stderr, "Current default <COMPILER>: %s\n",
                   COMPILER_Names[COMPILER_DEFAULT][0] );

  fprintf( stderr, "Acceptable parameters for <COMPILER> are:\n" );
  for (i=1; i < COMPILER_QTY; i++)
      fprintf( stderr, "     %-15.15s     %s\n",
                       COMPILER_Names[i][0],
                       COMPILER_Names[i][1] );
  fprintf(stderr, szError);
  return 0;
}

char *echogets(char *s, int echo) {
 char * const retval=fgets(s, LINELENGTH, stdin);
 if (echo!=0 && retval!=NULL) {
  fputs(retval, stderr);
 }
 return retval;
}

int main( int argc, char *argv[] )
{ int   rv, i, j, ok;
  int   stay;
  int   prefetch;
  char *p;
  int   dec_col = 0; /* Decrement column value by 1 */
  int   dec_row = 0; /* Decrement row    value by 1 */
  int   echo = 0;    /* Echo stdin to stderr */
  int   verbose = 0; /* Include Bad Formatted Lines */
  int   CWDlen;
  int   COMPILER = COMPILER_DEFAULT;

  getcwd( CWD, sizeof(CWD) );
  CWDlen = strlen(CWD);

  for (i=1; i<argc; i++)
    {
      if (argv[i][0] != '-')
        return ShowUsage("");
      switch ( argv[i][1] )
        {
          case 'c':
            dec_col = 1;
            break;
          case 'r':
            dec_row = 1;
            break;
          case 'e':
            echo = 1;
            break;
          case 'v':
            verbose = 1;
            break;
          case 'o':
              {
                if (i+1 >= argc)
                    return ShowUsage("Error: Missing parameter for -o\n");
                i++;
                COMPILER = -1;
                for (j=1; j<COMPILER_QTY; j++)
                    if (  (strcmp(argv[i], COMPILER_Names[j][0]) == 0) ||
                          ( (argv[i][0] == '_') &&
                            (strcmp(&argv[i][1], COMPILER_Names[j][0]) == 0) )  )
                        COMPILER = j;
                if (COMPILER == -1)
                    return ShowUsage("Error: Invalid COMPILER specified\n");
              }
            break;
          case 'h':
            return ShowUsage("");
          default:
            return ShowUsage("Error: Invalid option\n");
        }
    }
  if (COMPILER == 0)
      return ShowUsage("Error: COMPILER must be specified in this system\n");

  stay     = ( echogets(Line, echo) != NULL );
  prefetch = 0;

  while( stay )
    {
      *FileName = 0;
      Row       = 0;
      Col       = 0;
      Severity  = ' ';
      *Reason   = 0;
      ok        = 0;
      switch (COMPILER)
        {
          case COMPILER_GCC:
            Severity = 'e';
#ifdef GOTO_FROM_WHERE_INCLUDED
            rv = sscanf( Line, "In file included from %[^:]:%u:",
                               FileName, &Row );
            if ( rv == 2 )
              {
                ok = (echogets(Reason, echo) != NULL);
              }
            else
#endif
              {
	        if ((rv = sscanf( Line, "%[^:]:%u: warning: %[^\n]",
                                   FileName, &Row, Reason ))==3) {
		 Severity = 'w';
		} else {
                rv = sscanf( Line, "%[^:]:%u: %[^\n]",
                                   FileName, &Row, Reason );
		}
                ok = ( rv == 3 );
              }
            Col = (dec_col ? 1 : 0 );
            break;
          case COMPILER_AIX:
            rv = sscanf( Line, "\"%[^\"]\", line %u.%u: %*s (%c) %[^\n]",
                               FileName, &Row, &Col, &Severity, Reason );
            ok = ( rv == 5 );
            break;
          case COMPILER_HPUX:
            rv = sscanf( Line, "cc: \"%[^\"]\", line %u: %c%*[^:]: %[^\n]",
                               FileName, &Row, &Severity, Reason );
            ok = ( rv == 4 );
            Col = (dec_col ? 1 : 0 );
            break;
          case COMPILER_SOLARIS:
            rv = sscanf( Line, "\"%[^\"]\", line %u: warning: %[^\n]",
                               FileName, &Row, Reason );
            Severity = 'w';
            ok = ( rv == 3 );
            if ( rv != 3 )
              {
                rv = sscanf( Line, "\"%[^\"]\", line %u: %[^\n]",
                                   FileName, &Row, Reason );
                Severity = 'e';
                ok = ( rv == 3 );
              }
            Col = (dec_col ? 1 : 0 );
            break;
          case COMPILER_ATT:
            rv   = sscanf( Line, "%c \"%[^\"]\",L%u/C%u%*[^:]:%[^\n]",
                                 &Severity, FileName, &Row, &Col, Reason );
            ok = ( rv == 5 );

            if (rv != 5)
              { rv   = sscanf( Line, "%c \"%[^\"]\",L%u/C%u: %[^\n]",
                                     &Severity, FileName, &Row, &Col, Reason );
                ok = ( rv == 5 );
              }

            if (rv != 5)
              { rv  = sscanf( Line, "%c \"%[^\"]\",L%u: %[^\n]",
                                   &Severity, FileName, &Row, Reason );
                ok = ( rv == 4 );
                Col = (dec_col ? 1 : 0 );
              }

            stay = (echogets(Line2, echo) != NULL);
            while ( stay && (Line2[0] == '|') )
              { for (p=&Line2[2]; (*p) && (isspace(*p)); p++);
                strcat( Reason, ": " );
                strcat( Reason, p );
                Line2[0] = 0;
                stay = (echogets(Line2, echo) != NULL);
              }
            prefetch = 1;
            strcpy( Line, Line2 );
            break;
          case COMPILER_IRIX:
            Col       = 1;
            prefetch  = 0;
            rv        = 0;
            ok        = 0;
            if ( !strncmp(Line, "cfe: ", 5) )
              { p = &Line[5];
                Severity = tolower(*p);
                p = strchr( &Line[5], ':' );
                if (p == NULL)
                  { ok = 0;
                  }
                 else
                  {
                    rv = sscanf( p+2, "%[^:]: %u: %[^\n]",
                                 FileName, &Row, Reason );
                    if (rv != 3)
                      rv = sscanf( p+2, "%[^,], line %u: %[^\n]",
                                   FileName, &Row, Reason );
                    ok = ( rv == 3 );
                  }

                if (ok)
                  { prefetch = 1;
                    stay = (echogets(Line, echo) != NULL);
                    if (Line[0] == ' ')
                      stay = (echogets(Line2, echo) != NULL);
                    if (  (Line2[0] == ' ') &&
                          ( (Line2[1] == '-') || (Line2[1] == '^') )  )
                      { Col = strlen(Line2)-1;
                        prefetch = 0;
                      }
                     else
                      { strcat( Line, "\n" );
                        strcat( Line, Line2 );
                      }
                  }
              }
            break;
        }
      if (dec_col) Col--;
      if (dec_row) Row--;
      if (!ok)
        {
          if ( Line[0] == 'g' )
              p = &Line[1];
          else
              p = &Line[0];
          ok = sscanf( p, "make[%*d]: Entering directory `%[^']",
                       BasePath );
          if (verbose)
            printf( "[%u]?%s\n", ok, Line );
        }
       else
        {
          for (p=Reason; (*p) && (isspace(*p)); p++);
          if ( BasePath[CWDlen] == 0 )
              printf( "%s:%u:%u:%c:%s\n", FileName, Row, Col, Severity, p );
          else
            {
              printf( "%s/%s:%u:%u:%c:%s\n", &BasePath[CWDlen+1], FileName, Row, Col, Severity, p );
            }
        }
      if (!prefetch)
        stay = ( echogets(Line, echo) != NULL );
    }
  return 0;
}
